Smoking problem?

I smoked weed for the first time yesterday since Christmas day. I smoked I small sized blunt and a king sized joint and got HIGH ASF 😂 I was sitting on the couch in my friend's house and it felt like gravity was pulling me inside the chair, my whole face and body were tingling and I kept laughing uncontrollably. Do you ever hear people say that you will never get as high as you were the first time you ever smoked... Well I just disproved all those "sayings" cause this was probably the highest I've ever been. Problem is I just woke up and I have possibly the worst headache I have ever had In my life. Could someone please tell why this is cause I'm having a really hard time trying to convince myself I don't have a brain tumor